There are about 4531.023 grams or 4.53 kilograms, or about 9.989 (almost 10) pounds of steel in your twelve by twelve by one quarter piece. The answer in English units is 1 square foot of 1 inch steel weighs 40.8 pounds. take length times width in feet times the thickness in inches times 40.8 to find the weight. In answer to your question the weight would be 10.2 lbs. 1' * 1' *.250*40.8.
But as most Pennsylvania residents would agree, almost every place here has its safe and not safe parts. So just make sure you're informed ahead of time. Here's a look at the most dangerous cities in Pennsylvania according to the data: Duquesne; Darby; Ambridge; For more reading, check out: These Are The 10 Best Places To Live In Pennsylvania For 2018
For cities of 500,000 or more people, here's the score: Safest city was Honolulu, HI, followed by 2. New York, NY. El Paso, TX was 3rd, San Jose 4th, Austin 5th, San Diego sixth, Seattle 7th, and Los Angeles 8th safest. California ranks three out of the top 8, which isn't too bad. Bad cities (unsafe) brought Detroit in first place, followed by Baltimore, Memphis, Washington, D.C., Philadelphia, Milwaukee, Indianapolis and Dallas. Note: This chart below is from 2005.